Gmail (or something) is changing my class names?

Question

Ok, this is weird. I have an HTML email template that I am trying to adjust. In the template, I have a standard

. But, the client has requested tha

Answer 1

Gmail absolutely changes classnames in your email. If you create a style sheet and send it out, it will change the classnames in the style sheet and in the email body. It will also strip out any styles that it doesn't support, sometimes the entire sheet.

These are the CSS properties and queries supported by Gmail:

https://developers.google.com/gmail/design/reference/supported_css

Good luck.